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Finding the Fourth Proportional to 2,900.04, 4,001.88 and 1,720.68

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Solution

The fourth proportional to 2,900.04, 4,001.88 and 1,720.68 is: 2,374.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,900.04 : 4,001.88 = 1,720.68 : x
  2. Step 2: Convert to fraction form
    2,900.04/4,001.88 = 1,720.68/x
  3. Step 3: Cross multiply
    2,900.04x = 4,001.88 × 1,720.68
  4. Step 4: Simplify right side
    2,900.04x = 6,885,954.88
  5. Step 5: Solve for x
    x = 6,885,954.88/2,900.04
  6. Step 6: Final answer
    x = 2,374.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.